Found a great little utility application for finding the size of directories and files.
I have always used TreeSize Professional v3.33, but it does cost money. (http://www.jam-software.com/treesize/index.shtml)
There is an alternatives:
WinDirStat - Directory Statistics
"Shows where all your disk space has gone and helps you clean it up."
Re-programmed for MS Windows by Bernhard Seifert (mailto:bseifert@users.sourceforge.net),
based on Stefan Hundhammer's KDE (Linux) program KDirStat (http://kdirstat.sourceforge.net/).
WinDirStat's home is http://windirstat.sourceforge.net/
Here are some screenshots:



Let me know what you think.
Thanks,
Murray